Global Patent Index - EP 0199340 A3

EP 0199340 A3 19881109 - APPARATUS FOR PRODUCING HIGH TEMPERATURE-RESISTANT, AMPLE HEAT-CONDUCTIVE, ELECTRICALLY INSULATING PLASTICS USING A TWIN-SCREW EXTRUDER

Title (en)

APPARATUS FOR PRODUCING HIGH TEMPERATURE-RESISTANT, AMPLE HEAT-CONDUCTIVE, ELECTRICALLY INSULATING PLASTICS USING A TWIN-SCREW EXTRUDER

Publication

EP 0199340 A3 19881109 (DE)

Application

EP 86105541 A 19860422

Priority

  • DE 3514854 A 19850424
  • DE 8512190 U 19850424

Abstract (en)

[origin: EP0199340A2] The twin-screw extruder with meshing, counter-rotating screws in parallel arrangement is characterised by an L/D ratio of the screws (2, 12) of less than 20, has in the discharge zone at the head of the extruder obtuse screw ends (21, 12) and, in the following attaching part (4), designed as a mould, at least one inlet opening (3) which lies immediately ahead of the intermeshing zone of the two screws (2, 12). Use of the twin-screw extruder according to the invention allows high temperature-resistant, amply heat-conductive and electrically insulating plastics to be produced on the basis of polymer/metal materials, since the material is not segregated during extrusion by the reduction in pressure and the metal particles are not sheared. These plastics are used as heat sinks, enclosures and coverings in power electronics. <IMAGE>

IPC 1-7

B29C 47/40; B29C 47/60; B29B 9/06; B29C 47/12

IPC 8 full level

B29B 7/48 (2006.01); B29C 47/40 (2006.01); B29C 48/41 (2019.01)

CPC (source: EP US)

B29B 7/484 (2013.01 - EP US); B29C 48/41 (2019.01 - EP US); B29C 48/03 (2019.01 - EP US); B29K 2105/12 (2013.01 - EP); B29K 2995/0007 (2013.01 - EP); B29K 2995/0013 (2013.01 - EP)

Citation (search report)

  • [A] FR 2512035 A1 19830304 - KABEL & GUMMIWERKE AG [BE]
  • [A] DE 845262 C 19520731 - WAMPACH GASTON
  • [A] DE 1029557 B 19580508 - REIFENHAEUSER MASCHB A
  • [A] W. MINK: "Grundzüge der Extrudertechnik", Seiten 27-30, Rudolf Zechner Verlag GmbH, 1964, Speyer/Rhein - Wien - Zürich
  • [AD] Kunststofftaschenbuch, 22. Ausgabe, Seiten 132-145, Carl Hanser Verlag, 1983, München - Wien

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU NL SE

DOCDB simple family (publication)

EP 0199340 A2 19861029; EP 0199340 A3 19881109; EP 0199340 B1 19901114; DE 8512190 U1 19861009

DOCDB simple family (application)

EP 86105541 A 19860422; DE 8512190 U 19850424